4 cylinders + 6 cylinders 4 cylinders + 6 cylinders - Steyr Motors

ToC
05 COOLING SYSTEM
Closed cooling circuit
To drain the closed cooling circuit, lift or lower the
bow of the boat in such a way that the engine is in
horizontal position, which permits an ideal drainage
of motorblock and manifold.
SERVICE MANUAL MARINE ENGINES
1
ATTENTION: Approx. 1 liter of coolant will remain in
the motorblock which is to be
considered for refilling.
With hot engine, the closed cooling
circuit is under pressure. Do not try to
open the coolant tank cap or the drain
plug when the engine is hot. This could
lead to severe injuries by hot coolant
under pressure. As soon as the engine
has cooled down, the cap may be
opened by 1/4 turn to the left, to release
possibly remaining pressure. Then
press down the cap, turn and remove.
00.07 ill.5
1
7 There are two drain plugs on the engine through
which the coolant from the internal cooling circuit can
be drained.
(Refer to ill.5/pos.1 and ill.6/pos.1)
8 Loosen the two drain plugs (ill.5/pos.1 and 6/pos.1),
possibly stick a hose onto the drain plugs and collect
the coolant in a bucket.
00.07 ill.6
ATTENTION: The closed cooling circuit must always
be filled with coolant. If the circuit
remains for a long time without coolant,
corrosion damages may occur.
Page COOLING SYSTEM - 14 Z001019/0_6_July 2008